Comprehension given below is followed by some multiple-choice questions.
Each question has one correct option. Choose the correct option.
In the modern periodic table, elements are arranged in order of increasing
atomic numbers which are related to the electronic configuration. Depending
upon the type of orbitals receiving the last electron, the elements in the periodic
the table has been divided into four blocks, viz, s, p, d and f. The modern periodic
table consists of 7 periods and 18 groups. Each period begins with the filling
of a new energy shell. In accordance with the Aufbau principle, the seven
periods (1 to 7) have 2, 8, 8, 18, 18, 32 and 32 elements respectively. The
seventh period is still incomplete. To avoid the periodic table being too long,
the two series of f-block elements, called lanthanoids and actinoids are placed
at the bottom of the main body of the periodic table.
(a) The element with atomic number 57 belongs to
(i) s-block
(ii) p-block
(iii) d-block
(iv) f-block
(b) The last element of the p-block in 6th period is represented by the
outermost electronic configuration.
(i) 7s2 7p6
(ii) 5f 14 6d10 7s 2 7p 0
(iii) 4f 14 5d10 6s2 6p6
(iv) 4f 14 5d10 6s 2 6p 4
(c) Which of the elements whose atomic numbers are given below, cannot
be accommodated in the present set up of the long form of the periodic
table?
(i) 107
(ii) 118
(iii) 126
(iv) 102
(d) The electronic configuration of the element which is just above the
element with atomic number 43 in the same group is ________.
(i) 1s2 2s2 2p6 3s2 3p6 3d5 4s2
(ii) 1s2 2s2 2p6 3s2 3p6 3d5 4s3 4p6
(iii) 1s2 2s2 2p6 3s2 3p6 3d6 4s2
(iv) 1s2 2s2 2p6 3s2 3p6 3d7 4s2
(e) The elements with atomic numbers 35, 53 and 85 are all ________.
(i) noble gases
(ii) halogens
(iii) heavy metals
(iv) light metals
(a) Option (iii) is the answer
(b) Option (iii) is the answer
(c) Option (iii) is the answer.
(d) Option (i) is the answer
(e) Option (ii) is the answer
- JEE Main
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- Physics
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- Wave on String
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- Magnetism and Matter
- Electromagnetic Induction
- Atomic Structure
- Dual Nature of Matter
- Nuclear Physics
- Radioactivity
- Semiconductors
- Communication System
- Error in Measurement & instruments
- Alternating Current
- Electromagnetic Waves
- Wave Optics
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- All Subjects
- Physics
- Motion in a Plane
- Law of Motion
- Work, Energy and Power
- Systems of Particles and Rotational Motion
- Gravitation
- Mechanical Properties of Solids
- Mechanical Properties of Fluids
- Thermal Properties of matter
- Thermodynamics
- Kinetic Theory
- Oscillations
- Waves
- Electric Charge and Fields
- Electrostatic Potential and Capacitance
- Current Electricity
- Thermoelectric Effects of Electric Current
- Heating Effects of Electric Current
- Moving Charges and Magnetism
- Magnetism and Matter
- Electromagnetic Induction
- Alternating Current
- Electromagnetic Wave
- Ray Optics and Optical Instruments
- Wave Optics
- Dual Nature of Radiation and Matter
- Atoms
- Nuclei
- Semiconductor Electronics: Materials, Devices and Simple Circuits.
- Chemical Effects of Electric Current,
All Study Material
- JEE Main
- Exam Pattern
- Previous Year Papers
- PYQ Chapterwise
- Physics
- Kinematics 1D
- Kinemetics 2D
- Friction
- Work, Power, Energy
- Centre of Mass and Collision
- Rotational Dynamics
- Gravitation
- Calorimetry
- Elasticity
- Thermal Expansion
- Heat Transfer
- Kinetic Theory of Gases
- Thermodynamics
- Simple Harmonic Motion
- Wave on String
- Sound waves
- Fluid Mechanics
- Electrostatics
- Current Electricity
- Capacitor
- Magnetism and Matter
- Electromagnetic Induction
- Atomic Structure
- Dual Nature of Matter
- Nuclear Physics
- Radioactivity
- Semiconductors
- Communication System
- Error in Measurement & instruments
- Alternating Current
- Electromagnetic Waves
- Wave Optics
- X-Rays
- All Subjects
- Physics
- Motion in a Plane
- Law of Motion
- Work, Energy and Power
- Systems of Particles and Rotational Motion
- Gravitation
- Mechanical Properties of Solids
- Mechanical Properties of Fluids
- Thermal Properties of matter
- Thermodynamics
- Kinetic Theory
- Oscillations
- Waves
- Electric Charge and Fields
- Electrostatic Potential and Capacitance
- Current Electricity
- Thermoelectric Effects of Electric Current
- Heating Effects of Electric Current
- Moving Charges and Magnetism
- Magnetism and Matter
- Electromagnetic Induction
- Alternating Current
- Electromagnetic Wave
- Ray Optics and Optical Instruments
- Wave Optics
- Dual Nature of Radiation and Matter
- Atoms
- Nuclei
- Semiconductor Electronics: Materials, Devices and Simple Circuits.
- Chemical Effects of Electric Current,